Gravity hinge



FIG. 1 is a perspective view thereof;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top elevational view thereof;

FIG. 4 is a bottom elevational view;

FIG. 5 is a front side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

The dotted lines show environment only and are not a claimed portion ofthe design.

CLAIM The ornamental design for a gravity hinge, as is shown anddescribed herein.